|Publication number||US8176343 B2|
|Application number||US 12/160,198|
|Publication date||May 8, 2012|
|Filing date||Dec 27, 2006|
|Priority date||Jan 6, 2006|
|Also published as||US20090222679, WO2007078081A1|
|Publication number||12160198, 160198, PCT/2006/5744, PCT/KR/2006/005744, PCT/KR/2006/05744, PCT/KR/6/005744, PCT/KR/6/05744, PCT/KR2006/005744, PCT/KR2006/05744, PCT/KR2006005744, PCT/KR200605744, PCT/KR6/005744, PCT/KR6/05744, PCT/KR6005744, PCT/KR605744, US 8176343 B2, US 8176343B2, US-B2-8176343, US8176343 B2, US8176343B2|
|Inventors||Jae Wook Lee|
|Original Assignee||Lg Electronics Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (2), Classifications (18), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is a national stage application of International Application No. PCT/KR2006/005744, filed on Dec. 27, 2006, which claims the benefit of earlier filing date and right of priority to Korean Application No. 10-2006-0001663, filed on Jan. 6, 2006, the contents of all of which are hereby incorporated by reference herein in their entirety.
The present invention is related to a method for providing information for power management of devices connected to a network.
Recently, inexpensive and pervasive networking technologies based on various small devices are emerging or being commercialized. People can make good use of various home appliances such as refrigerators, TVs, washing machines, PCs, and audio equipments once such appliances are connected to a home network. For the purpose of such home networking, UPnP™ (hereinafter, it is referred to as UPnP for short) specifications have been proposed. UPnP technology employs distributed and open network architecture, enabling the user to control respective devices of various types or services provided by the devices by using one or more than one control point (in general, it is termed as ‘CP’ for short) based on well-known standard networking technologies such as IP (Internet Protocol), HTTP, and so on.
UPnP technology automatically discovers a UPnP compliant device (and a service provided by the device) on a network, models the service of the corresponding device as state variables, and enables a control point or another device to use the modeled service. A control point (CP) is one of control applications and a plurality of CPs can be installed together in a particular UPnP device carrying out a different service. Also, CPs can be installed individually distributed over a number of devices.
Meanwhile, an AV home network based on UPnP can be equipped with a device carrying out the role of a server such as an AV media server or PM (Power Management) server; and a device carrying out the role of a media renderer such as a digital television.
An AV media server is a device providing various media files to be reproduced through a media renderer; a PM server carries out power management (management of a state such as active, sleep, and hibernation) about physical resources where the server is installed.
In this way, a PM server can be realized as a single independent device or can be realized together in a device of another function. The latter case is called as an embedded device; for example, an AV media server and PM server can be implemented in a single device.
An AV media server (or a device providing a different service) and PM server are controlled independently by separate control points. Generally, a control point which controls the former is called as an AV control point; while a control point which controls the latter is called as a PM control point. Since a PM CP discovers PM servers only and carries out controlling thereof, unless the user recognizes implementation forms of all the devices on a network, the user will not be able to figure out which PM server should be controlled through the PM CP in order to control power status of an associated device or resources of the device. For example, when an embedded device exists on a network, where an AV media server and PM server are implemented together, even if the user wants to check or change the power status of an AV media server of the embedded device, it cannot be known with a list of discovered PM servers which PM server carries out the role.
One object of the present invention is to provide a method for creating power management information to associate a device installed together in an embedded device where a power management server is installed.
Another object of the present invention is, by using associated power management information, to provide a method for enabling a user to conveniently select a device to which the user wants to apply power management.
One method for creating information for power management of devices on a network according to the present invention comprises a step, conducted by a first application, for receiving names and addresses from each of power management servers on the network and creating a power management server list; a step for checking whether an address identical to the received network address is registered in a device list created by a second application; and a step for, if registered, updating the power management server list such that information written in the device list is added to the power management server list.
Also, one method for providing information for power management of devices on a network according to the present invention comprises creating a power management server list which contains, for at least one power management server, a pair of user friendly names including a user friendly name allocated to the one power management server; and for the at least one power management server, displaying one user friendly name of the pair of user friendly names instead of other user friendly name pertaining to the pair allocated to the one power management server, when displaying information of the power management server list.
In one embodiment according to the present invention, the network address is unique MAC (Media Access Control) address allocated to a LAN card.
In one embodiment according to the present invention, the second application is a control point for invoking an action to an AV media server or AV devices on the network.
In one embodiment according to the present invention, information contained in the device list to be added to the power management server list according to the update is a user friendly name allocated to an AV media server or AV device.
In one embodiment according to the present invention, the at least one power management server includes a power management server constituting an embedded device together with an AV media server.
In one embodiment according to the present invention, the user friendly name pair consists of a user friendly name allocated to an AV media server or AV device and a user friendly name allocated to a power management server.
Hereinafter, according to the present invention, embodiments of a method for providing information for power management of devices on a network will be described in detail with reference to appended drawings.
The home network illustrated in
Although a single AV media server 10A is installed in the embedded server device 10 in the illustration of
The AV control point 20A can carry out a desired inquiry or control operation related to presentation of AV data by invoking an arbitrary action to the UPnP device (more specifically, various services provided by the device), the AV media server 10A in the example of
And the PM control point 20B installed in the client 20 also discovers a PM server 10B in the embedded server device 10 and a PM server in the IPTV 40 through a discovery procedure. During the discovery procedure respective devices provide the corresponding control point with device & service descriptor 201.
The descriptor information includes “Friendly Name” of a device (it is a user friendly identifier which is a name used for enabling the user to recognize a specific device by characters) and a unique identifier of a physical communication module used for the device to access a network (e.g., MAC (Media Access Control) address when the physical communication module corresponds to a LAN card).
Therefore, the PM control point 20B searches descriptor information of AV devices which the AV control point 20A has obtained independently of the PM control point 20B and descriptor information of PM servers which the PM control point 20B itself has obtained for unique identifiers specifying the same physical communication module 202; when unique identifiers specifying the same communication module are found, the corresponding device is determined that it is installed in the same embedded device. In this manner, the PM control point 20B, for a PM server determined as a device installed in an embedded device, updates 203 a PM server list which the PM control point 20B has created by juxtaposing a user friendly name of an associated AV devices (i.e., an AV device installed in the same embedded device) with a user friendly name of the PM server as shown in
The updated PM server list of
When the PM control point 20B, in response to a relevant input from the user in order to invoke an operation required for power management, provides the user with a PM server list through an appropriate UI (User Interface) in order to enable the user to select a device to which a power management operation is to be applied according to the user input, a user friendly name of an associated AV device is provided instead of the user friendly name of a PM server if the user friendly name of the associated AV device exists. This is because the user is more familiar with the name of an AV device, thereby allowing the user to recognize which device is which and at least to recognize a device much more quickly than the case of utilizing the user friendly name of a PM server.
First, an AV control point 20A and PM control point 20B in the client 20 are initialized (S10) and respectively carry out a discovery process for an associated device and/or server. According to this, various devices and/or servers including an AV media server 10A and PM server 10B in an embedded server device 10 are detected individually (S11).
During the discovery process, the AV control point 20A and PM control point 20B respectively acquire descriptor information of an associated device and/or server (S12).
The PM control point 20B, after acquiring descriptor information from all the PM servers, creates a PM server list as shown in
The PM control point 20B, after completion of creating a PM server list, requests and receives an AV device list created by the AV control point 20A, after which the PM control point 20B checks whether an identifier exists in the received AV device list identical to the unique identifier of a communication module (e.g., MAC address of a LAN card) in the created PM server list. If there existed at least one identical identifier (S13) (MAC address “90ab680123fe” in the examples of
The PM control point 20B checks up to the unique identifier of a communication module of the last PM server in a PM server list whether an identical identifier exists in the AV device list (S15); if existed, the PM server list is updated in the same manner above. Otherwise, the operation of updating a PM server list is terminated.
After an updated PM server list is obtained through the procedure above (e.g., a list such as the one in
When the user requests power management for a device selected through an appropriate menu provided according to selecting an item on the displayed screen as shown in
In the description of the above embodiment, a user friendly name “IPTV_PM_Server” of a PM server 40B implemented in the IPTV 40 is so specified that the user can recognize from the name a PM server installed in an IPTV. The preceding statement can be made true by employing an assumption that when a PM server is developed or adapted to an arbitrary device, the PM server is already supposed to be used for an IPTV. In that way, as in the preceding embodiment, by including characters to recognize an IPTV in a user friendly name of a PM server, the user can conveniently recognize an installed device through the user friendly name.
However, such a method cannot be applied to the case of using a PM server commonly for a number of devices. Therefore, as in the method described above, once a user friendly name of a PM server is specified generally and can be made available by associating with a user friendly name of an AV device where the PM server is installed together, development of a PM server would be easy and also the user can easily recognize a device where a PM server is installed without revising or changing a PM server even when the user additionally adapts a PM server to a particular device.
The present invention is not limited to the foregoing description of preferred embodiments and those skilled in the art may easily understand that the invention and various embodiments can be utilized with improvements, modifications, substitutions, or additions within the scope of the invention. If the improvements, modifications, substitutions, or additions belong to the scope of the invention as defined by the following appended claims, the spirit should also be regarded to belong to the present invention.
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|U.S. Classification||713/300, 709/220, 709/223, 709/224, 713/310, 713/320, 713/1|
|International Classification||G06F15/173, G06F13/10, G06F1/26|
|Cooperative Classification||Y02B60/35, H04L12/2803, H04L41/12, Y02B60/34, H04L12/12, H04L2012/2849|
|European Classification||H04L12/12, H04L41/12|
|Jan 12, 2009||AS||Assignment|
Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, JAE WOOK;REEL/FRAME:022095/0615
Effective date: 20081212
|Nov 3, 2015||FPAY||Fee payment|
Year of fee payment: 4